Description
MOQ 1 carton of 20 Sausages
A one-part, medium-modulus, elastomeric sealant designed for general weather sealing.
It is a silicone formulation that cures to a flexible and curable silicone rubber building joint seal.
Ideal for general glazing and weather sealing in curtain wall and building facades.
FEATURES & BENEFITS
• Ideal for expansion, connection, perimeter and other movement joints
• Neutral cure – suitable for use on coated glass, galvanized steel, masonry and other porous and nonporous substrates
• Extension/compression movement capability of up to ±50 percent of the original joint width
• Excellent weatherability, virtually unaffected by sunlight, rain, snow, ozone
• Excellent unprimed adhesion to a wide variety of construction materials and building components
• Ease of application – ready to use as supplied
• Excellent rheology, low string upon gunning
COMPOSITION
• One-part, neutral-cure, RTV silicone sealant
Color available : Black, Grey, White , bronze , Dark Grey
APPLICATIONS
• DOWSIL™ 791 Silicone Weatherproofing Sealant is a specified, premium performance weather sealing product specifically designed for general glazing
and weather sealing in curtain wall and building facades.
TYPICAL PROPERTIES
Specification Writers: These values are not intended for use in preparing
specifications.
Test1 Property Unit Result
Uncured – As Tested at 50% RH and 23°C (73°F)
ASTM C639 Flow (sag or slump) inches (mm) 0
ASTM C603 Extrusion Rate g/minute 140
Working Time minutes 20
ASTM C679 Tack-free Time, 77°F, 50% RH minutes 40
Curing Time at 77°F (25°C) and 50%
RH days 7–14
VOC Content2 g/L 31
As Cured – After 21 days at 50% RH and 77°F (25°C)
ASTM D2240 Durometer Hardness, Shore A points 34
ASTM C794 Peel Strength lb/in (kg/cm) 30 (5.4)
ASTM C719 Joint Movement Capability percent ± 50
ASTM C1135 Tensile Adhesion Strength
At 25% extension
At 50% extension
Psi (MPa) 40 (0.276)
Psi (MPa) 60 (0.414)
1ASTM – American Society for Testing and Materials.
2Based on South Coast Air Quality Management District of California. Maximum VOC is listed
both inclusive and exclusive of water and exempt compounds.
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